If they haven't been stored in a very wine friendly environment since release, chances are none are worth much, if anything. You can check auction prices at http://www.winebid.com, or retail at http://www.winesearcher.com. However, any price you could sell them at would be closer to wholesale, so essentially divide by two any prices you find out there.

I agree with Kcwhippet. If you did not store your wine properly to begin with then they aren't worth much. This means that your wine should have been kept in a dark room with a constant temperature. Have you done this? If not, then don't waste your time as you'll only make people mad at you.

Hi Jason,
My restaurant was in California and closed in 1979. The wine has moved with me 3 different times --- the numbers and types remaining slowly reducing over the years -- all but one I opened (that one had been seeping), well met my expectations.

Since moved from my restaurant, the bottles have been in the dark and at a constant cool temperature. I have friends who are interested in the wine --- we can work out an amicable agreement; one without the treat of anger due to misrepresentation. I don't drink any longer, otherwise I would have enjoyed these some years ago.